Global Patent Index - EP 3800413 A1

EP 3800413 A1 20210407 - SLUDGE DRYING APPARATUS AND PROCESS

Title (en)

SLUDGE DRYING APPARATUS AND PROCESS

Title (de)

VORRICHTUNG UND VERFAHREN ZUR SCHLAMMTROCKNUNG

Title (fr)

APPAREIL DE SÉCHAGE DE BOUES ET PROCÉDÉ

Publication

EP 3800413 A1 20210407 (EN)

Application

EP 20197440 A 20200922

Priority

IT 201900017936 A 20191003

Abstract (en)

A sludge drying apparatus (1), comprising:• a first indirect dryer (2a) and a second indirect dryer (2b), each of which comprises:- a casing-like body (3a; 3b) containing the sludge;- a heating jacket (7a; 7b) fitted around the casing-like body (3a; 3b);- a rotating mixer (8a; 8b) inside the casing-like body (3a;3b);• a first heating means (11) for heating one of the two jackets (7a, 7b) so as to impose a pre-drying condition on one of them, i.e. a heating at a temperature comprised between 90°C and 120°C;• a second heating means (12) for heating one of the two jackets (7a, 7b) so as to impose a drying condition on one of them, i.e. a heating at a temperature comprised between 150°C and 250°C;• a control system (10) configured to impose the pre-drying condition on the first dryer (2a) and, simultaneously, the drying condition on the second dryer (2b), or vice versa.

IPC 8 full level

F26B 3/20 (2006.01); F26B 3/22 (2006.01); F26B 11/16 (2006.01); F26B 23/00 (2006.01); F26B 25/22 (2006.01)

CPC (source: EP)

F26B 3/20 (2013.01); F26B 3/22 (2013.01); F26B 11/16 (2013.01); F26B 23/002 (2013.01); Y02P 70/10 (2015.11)

Citation (applicant)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 3800413 A1 20210407; EP 3800413 B1 20230607; EP 3800413 C0 20230607

DOCDB simple family (application)

EP 20197440 A 20200922